diff --git a/src/components/knockGold/index.jsx b/src/components/knockGold/index.jsx
index adc8db6a..41b52e5c 100644
--- a/src/components/knockGold/index.jsx
+++ b/src/components/knockGold/index.jsx
@@ -1544,7 +1544,7 @@ export default class addKnockGold extends Component {
                 }}
                 width="520px"
                 text={this.state.model.instruction}
-                limitLength={this.state.model.channel != 3 ? 500 : 1000}
+                limitLength={5000}
                 key={this.state.model.channel}
               />
             </FormItem>
diff --git a/src/components/redPackets/index.jsx b/src/components/redPackets/index.jsx
index 2670cf8e..8b3fc411 100644
--- a/src/components/redPackets/index.jsx
+++ b/src/components/redPackets/index.jsx
@@ -1129,7 +1129,7 @@ export default class addKnockGold extends Component {
                 }}
                 width="520px"
                 text={this.state.model.instruction}
-                limitLength={this.state.model.channel != 3 ? 500 : 1000}
+                limitLength={5000}
                 key={this.state.model.channel}
               />
             </FormItem>